Dangerous Caves.

There is an impulse implanted in all boys, which impels them to dig caves in every convenient bank, and these caves are always more or less dangerous from their liability to cave in upon the youthful miners. It not infrequently occurs that sad accidents do happen to youngsters, who, on account of lack of instruction, attempt to make underground retreats in some sandy bank, by boring a hole in the face of the hill. If, however, they make an excavation as here directed, and illustrated by Figs. 76 and 76a, their parents need feel no apprehension, for there is no more liability to accident than if they were digging in the home garden. Many of these houses have already been constructed.


CHAPTER IX.
A BOYS’ CLUB-HOUSE ON THE WATER.

We cannot all be Robinson Crusoes, and real desert islands are scarce, but with a little work we can build artificial islands, upon which Robinson Crusoe cabins of novel designs may be erected, and by forming